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How to fix my Laptop Battery

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May 10, 2011 12:29:24 AM

I have a HP dv2000 laptop and throughout the years I have always kept it plugged into the charger and now my battery holds only for about 5 minutes or less. How do I bring the life back to my battery?

More about : fix laptop battery

May 10, 2011 1:19:06 AM

Not much you can do.

Back in 2005 I kept my IBM ThinkPad T40 plugged into the AC outlet 24/7 for over 6 months with the battery installed. Before I did that I was able to get about 5.5 hour of usage. After that 6+ month period of continual charging the battery only lasted 10 minutes.

After about a year of continual charging and fully discharging the battery the battery was able to hold about a charge for 2.5 hours at most. It never increased from there.

Looks like it time for you to buy a new battery.
May 10, 2011 3:44:58 AM

jaguarskx said:
Not much you can do.

Back in 2005 I kept my IBM ThinkPad T40 plugged into the AC outlet 24/7 for over 6 months with the battery installed. Before I did that I was able to get about 5.5 hour of usage. After that 6+ month period of continual charging the battery only lasted 10 minutes.

After about a year of continual charging and fully discharging the battery the battery was able to hold about a charge for 2.5 hours at most. It never increased from there.

Looks like it time for you to buy a new battery.

+1
Batteries lose their charge semiconductivity and their efficiency over a period of time.
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May 10, 2011 5:48:18 AM

ghnader hsmithot said:
+1
Batteries lose their charge semiconductivity and their efficiency over a period of time.


Actually, my battery died 'cause it was being overcharged while the laptop was connected to the AC outlet for over 6 months. The same thing happened to the OP.
May 10, 2011 4:44:52 PM

Battery type plays an important role in maintain the battery.
Over the years Nicad->NiMH->li-ion.
Nicad; great for High Current, short time but had memory problems. primarily because individuals did not charge/discharge properly. Still used in power tools. Should always discharge to 1 volt per cell -NO LOWER. and charge at 1/10 AmpHr rating for 16 hours. Charging E should be limited to approx 1.35 V. storage - discharged

Replaced by NiMH which drastically reduced memory effect - same charge dischare requirements. Primary usage today, also power tools.

Li-ion. Higher volts per cell. No memory problem. Best for laptops. Storage - should be about 40% charged level.
http://centralhobbies.com/instructional/lithium.html

Concur with jaguarskx on removing battery when under prolonged usage of charger, But NOT because of overcharging. The circuitry should prevent this and longest life is reduced charge/discharge. The reason is more temperature driven
Quote:
For maximum storage life, batteries should be stored with a 40% charge (3.6 V) at 40°F (refrigerator). Perhaps one of the worst locations for a Li-ion battery is in a laptop computer when used daily on a desktop with the charger connected. Laptops typically run warm or even hot, raising the battery temperature, and the charger is maintaining the battery near 100% charge. Both of these conditions shorten battery life, which could be as short as six months to a year. If possible, the user should be instructed to remove the battery and use the ac adapter for powering the laptop when used as a desktop computer. A properly cared for laptop battery can have a service life of two to four years or more. END QUOTE
Ref: http://powerelectronics.com/portable_power_management/b...
Also an excellent artical on Li-ion batteries in general.

May 10, 2011 4:49:16 PM

I have a Home battery that I got with my laptop,
lasts about 10 mins away from the magic wire so I bought a new battery for walkabout use,
if I'm at home I plug the home battery in, if I'm out its the travel one, its just making sure you stick to the plan or you end up with 2 duff batteries
Moto
November 17, 2011 4:49:30 AM

Avoid keeping your battery in hot places such as your car during the daytime.
!